Ellicott's Commentary for English Readers - 1 Samuel 27:9
(9) And left neither man nor woman alive.—These acts of ferocious barbarity are simply without excuse; the reason for them is told us in 1 Samuel 27:11. No captive was to be left alive to tell the tale to King Achish, who was under the delusion that David’s feats of arms were carried out at the expense of his own countrymen, whose lands he was harrying. At this the Philistine rejoiced when he heard David was thus burning his only bridge of retreat: by alienating by these cruelties the affection... read more
John Dummelow's Commentary on the Bible - 1 Samuel 27:1-12
David flees to Gath, and obtains Ziklag from Achish2. David’s position now as the captain of 600 men was quite different from what it was in 1 Samuel 21:10. 7. A full year and four months] The phrase probably means ’about four months,’ lit. ’days and four months.’ 8 The Geshurites] were the inhabitants of a district in the S. of Philistia: see Joshua 13:2. They must not be confused with the Geshurites who lived E. of the Jordan. The tribes mentioned here were constant enemies of Israel whom... read more